Reprojeto de um conjunto de selagem de pacotes aplicando conceitos de PDP

Abstract

This paper describes the application of PDP concepts and tools in the redesign of a sealing assembly of a vertical packaging machine manufactured by a small company that wishes to adapt to the evolution of technology with the emergence of the industry 4.0. The current system limits the number of packages produced, and it is necessary to double the current production, considering the reliability of this set, which corresponds to 67% of the technical assistance, generating a high maintenance cost during the warranty period. The use of the PDP methods helped from the identification of the deficiencies of the current model to the preliminary research, which sought to evaluate several sources, establish the objectives and determine the performance specifications that the new system must meet. In this way, the new model was divided into 2 subsets, which provided a more detailed analysis, so the morphological and decision matrices were modeled, which defined the best alternatives for the 3D design development of each of the proposed systems. The servomotors and reducers met the dimensional and power expectations required for the full operation of the assembly, since the belts were dimensioned so that the chosen dimensions would meet the application. The commercial items presented results of load coefficient and useful life that met the needs of the application of each set, however, some presented higher values, which could be evaluated in the future. For the components manufactured, safety factor values were obtained by flowing above 5, but in one piece the obtained value was smaller, then submitted to a fatigue analysis. The support of the driven pulley was evaluated according to the application conditions of the part and the system, presenting approximately one possibility of failure in 1: 1,000,000,000 cycles. The external guide rod was subjected to a frequency analysis, in which the first 5 vibration modes were verified, which presented values 15 times higher than the working frequency, thus eliminating the possibility of the component resonating (sic).